动态控制的LED背光源设计

以往因CCFL亮度的不可控性,液晶电视是采用调节LCD的控制电压,改变液晶的透过率,来实现对LCD总体亮度的控制,这种方式在很多情况下造成背光模组的光能和电能浪费。而采用亮度动态控制的方式可以很方便地通过调节LED背光源电源的电压或输入电流的大小,从而改变LED的发光强度的方案,可使电视在LED较低能耗条件下工作。亮度动态控制就是通过对显示的画面进行分析,得到不同区域的最佳亮度同时控制LED背光达到相应的亮度。

LED Backlighting Design of Dynamic Control

CCFL brightness previously due to the uncontrollable nature, LCD TV is the adjustment of the LCD control voltage, LCD transmittance change to achieve the overall brightness of the LCD control, This means that in many cases caused the backlight module light and energy wasted. Using dynamic brightness control can be very convenient way of regulating LED backlight power supply voltage or the input current small, thereby changing LED luminous intensity of the program, the television will lower energy consumption in LED conditions. Dynamic brightness control is shown on the screen for analysis, be different regions of the best simultaneous control brightness LED backlight brightness corresponding to achieve.